I turned on the two remaining loops in the ASC system to see if we can lock. I put in some ones into the WFS_OUTPUT matrix
and locked the MC2_TRANS_PIT and MC2_TRANS_YAW loops.
The effect of doing so is visible in the error signals. The black loops are with all ASC loops off, Blue traces are with the WFS1 and 2 loops locked and Red traces are with all loops locked. I took the red traces to a lower frequency to see if the suppression of the error signals at low frequencies is disturbed by the switching on of the MC2_TRANS loops. They seem to be working fine without adding any perturbation above the UGF.
I measured the Transfer Function coefs (at 10Hz using the WFS Lockins) with MC2_TRANS loops locked in this rudimentary fashion
The green and blue bits are the only relevant parts since we ignore the off diagonal parts. And most of these off diagonal coefs are indeed quite small (<5% of the max). I have marked the not-so-small ones in yellow.
I then calculated the output matrix elements in two different ways.
a) Using a null vector in the place of MC_DoF --> MC2_TRANS transfer coefs. The output matrix we get is
b) Without using the null vector. i.e. using the MC_DoF --> MC2_TRANS transfer coefs and inverting the full matrix. The output matrix we get is
I plan to try out these two output matrices and measure the OL TFs of the MC2_TRANS and see if we can include these into ASC in a useful fashion.